Eenvoudige radio-cursus / door J. Corver Radio-navigation aerienne : realisations et perspectives / P. Gaudilliere training regulations Radio procedure / War Department Règlement du service radio-èlectrique international de la navigation aérienne Radio valves and how to use them / J. Scott-Taggart war department technical manual Installation of radio and interphone equipment in medium tank M4 series International meeting on radio aids to marine navigation, May 1946 radio communication series Frequency modulation / by August Hund Radio-telefonieprocedure. VS 11-7 Secret warfare : the arms and techniques of the resistance / [by] Pierre Lorain ; Engl. addap. by David Kahn elite World War II battlefield communications / by Gordon L. Rottman Radio-nieuws / Nederlandsche vereeniging voor radio-telegrafie
